Magnetic! I'll stick to them any day : )
Review by confirmed purchaser
Great customer service, very prompt delivery and I even learned something new! I placed an order, the magnets came the next day. I placed another order, and again they came the next day. The even researched the work I was sticking the magnet to to make sure it would hold it without damaging it. So interesting to learn more about magnets and how they hold up.